Other Parts Discussed in Thread: AFE4490,
IR 曲线杂波太大是哪问题
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AFE4490和AFE4400是pin to pin 兼容的,它们具有类似的功能。我发现它们有以下区别:
1. AFE4490的寄存器 NUMAV[7:0]: Number of averages,在AFE4400中是固定值2;
2. AFE4400 不支持 TIAGAIN 设置;
3. AFE4400不支持 ADC Bypass mode (CONTROL2寄存器配置中)
4.AFE4400不支持高 LED 电流范围(最大到 50 mA)